Vacuum-producing device.



Patented Sept. 16, 1913.

Y M w m M e a We & J. BIRRELL.

VACUUM PRODUCING DEVICE.

APP&IOATION FILED MAR. 18, 1912.

WI T/VESSES:

' UNITED STATES PATENT OFFICE.

IBIBRELL AND JAMES BIRRELL, OF SEATTLE, WASHINGTON, ASSIGNOBS TO FRANKJ. KOLMAN, TRUSTEE, OF SEATTLE, WASHINGTON.

VACUUM- PRODUCING DEVICE.

Specification of Letters Patent.

Patented Sept. 16, 1913.

To all whom it may concern:

Be it known that we, WILLIAM BI'RRELL and JAMES BIRRELL, citizens of theUnited States, residing at Seattle, in the county of King and Stateof'lVashington, have invented certain new and useful Improvements inVacuum-Producing Devices, of which the following is a specification.

This invention relates to vacuum producing appliances of the ejectortype, and is designed to provide an eiiicient device of this characterwhich is adapted to be attached to a water faucet and which will operatewith comparatively little noise.

With these and other objects in view, the invention consists in thenovel construction and combination of parts, as will be herein afterdescribed and claimed.

The accompanying drawing is a vertical sectional view of a vacuumproducing device constructed and arranged in accor ance with the presentinvention.

The shell or body 2 of the device is provided medially of its heightwith a conduit 3 which communicates with chambers 4 and 5 of greaterdiameters than the conduit and located at the top and bottom of thebody.

6 represents a rubber thimble to receive the bib of a household faucet.Said thimble is provided with a peripheral flange 6 which serves as agasket to make an airtight joint between said body and a glandnut 8which engages screw threads provided on the body.

Extending from the chamber 4 and axially int-o said conduit is a nozzle9. At a distance below the latter is an air inlet 10 extending through ani pic 11 which is adapted to be coupled with a hose 12 wherethrough theair is sucked into the device when operating.

13 is a deflector or partition positioned within the chamber 5 and is ofa conical shape with its apex protruding, desirably, into the mouth ofthe conduit. Said partition has a serrated periphery affording apertures14 in juxtaposition to the circular wall of the chamber, or at thebottom of a gutter 15 formed between such wall and the conicalpartition. The partition, as illustrated in the view, is secured bybeing pressed into the chamber 5 though it may be otherwise secured, ifdesired.

When the faucet is o ened water fills the chamber 4 and is disc argedthrough the nozzle 9 against the apex of the partition 13 and is therebydeflected into gutter 15 and against the peripheral wall of the chamber5. From this gutter the water escapes by falling through the holes 14accompanied by air whence a partial vacuum is created within the conduit3 to induce a suction in the tube 12.

Advantages of the present vacuum roducer reside in the fact that thewater w ich performs the work of the device is discharged unaccompaniedby noise and that the air is exhausted with an economical consumption ofwater.

What we claim, is

1. An aspirator comprising a conduit provided with a flaring mouth, awalled chamber of greater diameter than the conduit located therebelowand provided with a top substantially at right an les to its axis, asharp pointed conical deflector serrated at its lower edge andfrictionally engaging the side walls of the walled chamber to preventdisplacement thereof and provide a restricted water passage and havingits apex disposed within the flaring mouth.

2. An aspirator comprising a casing having a reduced medial portionprovided with a lateral opening and enlarged cup-shaped ends, a sharppointed conical deflector serrated at its lower edge adapted to bemounted in the lower end of the casing and held therein by frictionalcontact and having its apex extending into the lower end of the reducedmedial portion.

Signed at Seattle, lVash, this 12th day of March, 1912.

WILLIAM BIRRELL. JAMES BIRRELL.

WVitnesses Hermon BARNES, E. PETERSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 0! Patents.

Washington, D. C.

